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Date:      Tue, 6 Feb 2001 11:34:40 -0600 (CST)
From:      Mike Silbersack <silby@silby.com>
To:        David Malone <dwmalone@maths.tcd.ie>
Cc:        milunovic <milunovic@sendmail.ru>, <freebsd-hackers@freebsd.org>
Subject:   Re: echo request deny
Message-ID:  <Pine.BSF.4.31.0102061133480.14857-100000@achilles.silby.com>
In-Reply-To: <20010206111510.A25095@salmon.maths.tcd.ie>

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On Tue, 6 Feb 2001, David Malone wrote:

> On Tue, Feb 06, 2001 at 12:05:47PM +0000, milunovic wrote:
> > Is there anyway to deny echo request on FreeBSD (except ipfw add deny
> > icmp from any to any) ?
> > On Linux It was simple,just echo 1>/proc/.../icmp_echo_request
>
> You can limit the icmp response rate with:
>
> 	sysctl -w net.inet.icmp.icmplim=whatever
>
> where 'whatever' is the number of responses to allow in a second.
> You can't set it to zero however.
>
> 	David.

Echo requests are only limited in -CURRENT right now, I haven't MFC'd the
change yet.

Mike "Silby" Silbersack



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